Improved machine for pebbling or embossing leather



BENJAMIN MEEEITT, JE., 0E CHELSEA, MASSACHUSETTS.

IMPROVED MACHINE FOR PEBBLING 0R EMB'OSSVING LEATHER.

Specification forming part of LettersPatent No. 36,228, dated August 19, 1862; Y

To all whom, it may concern,.-

Be it known that I, BENJAMIN MERRITT, Jr., of Chelsea, in the county of Suffolk and State of Massachusetts, have invented certain Improvements in Machines for Pebbling or Embossing Leather, of which the following is v a full, clear, and exact description, reference being had to theaccompanying drawings, making part of this specification, in which-Y Figure l isa View of the machine; Fig. 2, a transverse vertical section of the same.

A considerable amount'of thin leather-such as sheep-skins, or splits from them-.is used by book binders, pocketbook manufacturers, Ste., which is pebbled or embossed to give it a surface filled with small iudentations, like shagreem or to imitate moroccoJ This finish has heretofore been given to the wskin either by passing over the skinr a narrow roll on which was engraved the indentations or creases to be put on the leather, or narrow strips of leather have been passed between short rolls, one of which was suitably roughened or engraved, or by applying to the surface of the leather an engraved copper plate, to which the required pressure was applied by any suitable press. All of these processes have been slow and limited in their operations, and the leather showed where the edge of the roll or plate came, to avoid which difficulty is the object of my present invention, which consists in a machine in which a whole skin, or two skins at the same time,r may be passed through the machine, to be figured or pebbled by a single roll of sufcient length properly supported to prevent its springing, as will now be more fully describedrin such terms that others skilled in the art may understand and use my invention.

In the said drawings, A are housings braced by suitable top and bottom braces, a b. In a slot, c, in each housing is placed, iirst, the boxes d of a vulcanized-rubber roll, B, ythese boxes resting on rubber or other suitable springs, e, secured in the housings. Above the roll B and resting on it is the engraved or indented roll C, of iron or other suitable metal, which is to give the figure or impression to the leather. Its boxes f also slide up and downin Athe housings, and it is revolved by suitable power applied to the wheel D on its shaft.

lindependently of the other.

, Another roll, E, similar to B, rests on the roll C. Its boxes g slide in the slot c in the housings, but are prevented from rising beyond certain limits by set-screws h, which pass through the ends of the brace a and bear on these boxes,

so that the pressure applied to the skin being passed th rough the machine may be regulated.

A frame, t', is attached to each box f. Theysupport on each side of the rolls a table, F or G, the former being placed at such a level that a skin placed on it may be fed in over the roll O, and the latter at a lower level to feed askin in between the rolls G and B as the wheel D is rey volvedinthe direction of its arrow. This permits two skins to be run through the machine at the same time, though either tablev may be used A rest or guidebar, Ic, placed above the table G, receives the skin as it comes through the rolls from the table F and carries itover clear of the'table G, when it will be received by the attendant.

I sometimes use a slide, m, which is beveled off thin at its front edge and has a rabbet, o, at each end to preventits being drawn between the rolls, on which the skin is laid, and is kept distended by the attendant while he feeds it up to the rolls. v p

The rolls B and E-are each made of a metal tube with heads at intervals of about one-fourth its length, through which the shaft passes, and a tube of vulcanized rubber is drawn on over the metal tube. Y v

By the above arrangement of the rolls and theirsliding boxes the pressure applied by passing the skin `through on either or on both sides of the roll C is communicated to the springs e, except what is absorbed by the elastic rolls B and E, andmay be regulated by the set-screws h, while a support being given by the rolls B and E to the whole length of the metal roll C, I am enabledto make it of sufoient length to pebble or ligure a whole skin at one operation without having to make the roll of so great a diameter as would make the machine too heavy Yand costly.

I am aware that in machines for other purposes long rolls of small diameter have been supported for the whole of their length to prevent them from springing.

What I claim as my invention, and desire to secure by Letters Patent, is-

ings or boxes dfg sliding and supported in the l. The aboveesoribed machine for peb- 7c on theboxesf of the roll C, so that they shall bling or iguring leather, consisting of the inmaintain their proper positions with respect dented or engraved roll C, with the elastic rolls to this roll as it rises or falls. A B and E above and below it, with their bezu- BENJAMN MERRITT, JR.

Witnesses:

THos. R. RoAoH, I?. E. TESCHEMACHER.

housings A, in the manner specified.

2. suspending the tables F and G and rest 

